If you use the button on the bulb to adjust the brightness level, the color temperature will change as the brightness level changes.
|Brightness Level||Color Temperature|
If you adjust the brightness of the bulb from the app that corresponds to the hub, i.e. if the bulb is on the Sengled Hub and you use the Sengled Home app to adjust the brightness, the color temperature will change as the brightness level changes. The degree to which the color temperature will change is listed above.